Seal assembly for a turbomachine

(19)

(11)

EP 1 582 700 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	14.12.2005 Bulletin 2005/50

(43)	Date of publication A2:
	05.10.2005 Bulletin 2005/40

(21)	Application number: 05251810.7

(22)	Date of filing: 23.03.2005

(51)	International Patent Classification (IPC)⁷: F01D 11/12, F01D 11/14

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR LV MK YU

(30)

Priority:

30.03.2004 US 813102

(71)	Applicant: GENERAL ELECTRIC COMPANY
	Schenectady, NY 12345 (US)

(72)	Inventors:
	Ghasripoor, Farshad New York 12302 (US) Chupp, Raymond Edward New York 12302 (US) Lokhandwalla, Murtuza New York 12065 (US) Bhate, Nitin New York 12148 (US)

(74)	Representative: Goode, Ian Roy
	London Patent Operation General Electric International, Inc. 15 John Adam Street London WC2N 6LU London WC2N 6LU (GB)

(54)	Seal assembly for a turbomachine

(57) A compliant seal (20) for use between rotating blades (16) and a static shroud (18) surrounding the rotating blades (16) in a steam or gas turbine (10) is disclosed. The seal (20) includes a tip surface (36), substantially resistant to wear due to rubbing by the tip of the rotating blades (16), and an elastic biasing member (38), comprising a biasing element. The wear-resistant surface (36) is thus biased against the tips of the rotating blades (16) to seal a gas path between the rotating blades (16) and the static shroud (18).

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